What should I do if my TM30 registration details are not appearing after submission?

The user entered their information into the online TM30 form but their details aren't appearing after a few days. They are wondering if there could be reasons for this besides user error. Responses from the community suggest double-checking that the save button was clicked after entering details, ensuring the check-in date was correctly filled, and confirming that information may not have error messages but could still fail to save if not submitted properly.